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Abstract

In the quest to increase user perceived Quality of
Experience (QoE), the classic audio-visual content paradigm can
be extended to include media components that stimulate other
human senses. Among these, olfaction-enhanced multimedia has
attracted significant attention, as it is both attractive from user
point of view and challenging from research perspective. This
paper presents the results of two subjective studies which
analyzed user QoE of olfaction-enhanced multimedia. Diverse
scent types and video content were considered. In particular QoE
levels were studied when one and two olfaction stimuli enhanced
audiovisual media. The results presented show that scent type
influences user QoE. Statistically significant differences between
pleasant and unpleasant scent types existed. Also, in certain
cases, users were prepared to forgive the presence of unpleasant
scent types with respect to QoE. Finally users reported a clear
preference for olfaction presented after the video sequence with
which the olfaction effect should be synchronized, as opposed to before the video experience.